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pH Minus 7 Kg - Decrease pH of Swimming Pool Water

pH Minus 7 Kg - Decrease pH of Swimming Pool Water

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Includes VAT & Free Delivery to UK Customers
5.00 KGS
Free Shipping
Decrease pH of Water
Chemical Name:
Sodium Hydrogen Sulphate
£21.40 (Inc. VAT)
£17.83 (Ex. VAT)

pH Minus 7 Kg

pH Minus is used to decrease the pH level of your pool when it rises above pH 7.6


Test the pH of the water with a test kit. The ideal pH level required is between 7.2 – 7.6. Add 500g of pH Minus per 100m³ of water in soft water areas. Add 1Kg of pH Minus per 100m³ of water in hard water areas. The quantity required will depend on the total alkalinity and calcium hardness level of the water. Add pH Minus every day until the correct pH is achieved. This may take time to achieve so please allow 12-24 hours for complete mixing.

How to Use

Mix the required amount of pH Minus directly into water in a plastic container, always adding chemical to water and not water to chemical. Mix to dissolve if required. Once completely dissolved, add to the pool water.


Store in a cool dry place. Do not mix with other chemicals. Always wear suitable gloves and eye protection when handling chemicals.


Contains – Sodium Hydrogen Sulphate

EC LABEL EC No. 231-665-7

IF IN EYES – Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.

Causes serious eye damage. Wash hands thoroughly after handling. Avoid breathing dust. Wear protective gloves / protective clothes / eye protection & face protection. Keep out of reach of children.